Attachment for saw-mills



(No Model.)

T. J. WILLIAMS & T. S. MURRAY.

ATTACHMENT FOR SAW MILLS.

Patgnted Feb. 2, 1892.

Oi C) rnc NORRIS PiTERS co, PNOTO'LITHO. WASrIINGTON. n. c,

UNITED, STATES PATENT OEEIcE.

THOMAS J. VILLIAMS AND TIBERIS SJ MURRAY, OF IRONTON, OHIO.

ATTACHMENT FOR SAW-MILLS.

SPECIFICATION forming part of Letters Patent No. 468,215, dated February2, 1892.

Application filed July '7, 1391- Serial No. 398,663. (No model.)

, accurately saw beveled lumber-such, forinstance, as weather-boards andshingles.

To this end our Invention consists in certain features of constructionand combinations of parts, which will be hereinafter described and Iclaimed.

Reference is to be had to the accompanying, drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a side elevation of the attachment embodying our invention.Fig. 2 is a broken enlarged side elevation of the device, showing indetail the adjusting mechanism; and Fig. 3 isa vertical cross-section ofthe at tachment on the line 3 3 in Fig. 2, showing the attachmentapplied to an ordinary sawmill carriage.

The frame of the attachment consists of a plain plank 10, which, asshown in Fig. 3, is secured to the head-blocks 11 of an ordinarycarriage 12, which carriage is provided with the usual adjusting-lever13. The plank 10 may, however, be secured to any kind of a saw-millcarriage. The plank or frame is provided on one side with boxes 14, inwhich is mounted a rock-shaft 15, which carries a series of ordinarysaw-mill dogs 16. These dogs are of the common form, each comprising acase 17 and teeth 18, which are held to move in the case and areadjusted by a screw 19. The teeth are adapted to be forced upon a cant20, which is a stick of timber from which the beveled stuff is to besawed. The shaft 15 is provided with levers 21, which are socured to theshaft and extend upwardly therefrom, and these levers are preferablyarranged near the center, as shown in Fig. 1. The plank 10 is providedwith a pair of anteeth 18 firmly upon it, and when it is to be sawed thehandle 25 is thrown down into a horizontal position, as indicated bydotted lines in Fig. 3, and the cams or eccentrics 24, striking thelevers 21, tilt the levers and oscillate the rock-shaft 15, which tiltsthe dogs 16 and brings the cant 20 into the position indicated in dottedlines in Fig. 3. It will thus be seen that when the cant is presented tothe saw a beveled strip will be sawed from the edge of it, and when thenext strip is to be sawed thehand1e25 is raised and the bev eled stripwill be again sawed, and the position of the cantis shifted each time astrip is to be sawed from it, so that the butt of the first strip willbe formed at the bottom of the cant and the butt of the next strip atthe top, and so on. The thickness of the beveled strips may be regulatedby adjusting the saw-mill head-blocks 11 in the usual way, and differentadjusting-shafts may be used with the attachment to regulate the bevelof the strips.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1. The combination, with a frame 10, adaptedto be connected to a saw-mill carriage, of a longitudinally-extendingrock-shaft on the front face of the frame, a series of saw-mill dogsmounted between their ends on said shaft to rock with it and providedwith adj ustable teeth projecting beyond their front faces to grasp thetimber to be sawed, and means mounted on the frame for rocking the saidshaft and its series of dogs, substantially as set forth.

2. The combination,with the frame 10, having a parallel rock-shaft alongits front face, a series of saw-mill dogs mounted between their ends onsaid rock-shaft and having teeth projecting beyond their front faces,levers ICO projecting upward from said rock-shaft, a rock-shaft mountedin bearings on the up.- per edge of the frame parallel therewith andhaving cams engaging the front edges of said levers, and anoperating-lever secured to said cam rock-shaft, substantially as setforth.

3. A sawmill attachment comprising a frame, a rock-shaft mounted thereonand provided With dogs, levers secured to the rockshaft and projectingabove the frame, angular brackets secured to the frame and projecting toa point near the rock-shaft levers, and a handled adjusting -shaftmounted in the brackets and having cams thereon to engage the levers ofthe rock-shaft, substantially as described.

Witnesses:

CHAS. R. DIEMAR, W. G. MGKNIGHT.

